[FFmpeg-user] Transcode multicast IP video over ffmpeg

Đặng Đức Hưng ddhung at vasc.com.vn
Tue Apr 16 11:58:55 CEST 2013

I am trying to use the presets for codec x264 but I still understand the method to chose the suitable video bit rate, profile, level for each preset. Could you give me some useful advices for that. 
Thank you so much 

Best Regards
Đặng Đức Hưng
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-----Original Message-----
From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Carl Eugen Hoyos
Sent: Tuesday, April 16, 2013 4:11 PM
To: ffmpeg-user at ffmpeg.org
Subject: Re: [FFmpeg-user] Transcode multicast IP video over ffmpeg

Đặng Đức Hưng <ddhung <at> vasc.com.vn> writes:

> I have read in the codec x264 there is a encoding mode which is pass 2 
> can improve the quality of the output image. Could you support for me 
> the step by step to configure this pass 2 method.
> Here is the command line I am using:
> C:/ffmpeg_32/bin/ffmpeg.exe -i udp://

I may misunderstand but I don't think 2-pass methods can be used for udp input.
Try different x264 speed presets to find the one that still is real-time but has best quality (and choose high profile if you interested in quality).

Carl Eugen

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